Filtration means for filter cigarettes



F. P. SEMAN ETAL 3,330,284

FILTRATION MEANS FOR FILTER CIGARETTES Filed May 21, 1964 July 11, 1967l4 IO 20 n5 I14. 15 I5 FIG. 3 F|G.5

FIGJ} INVENTORS' FREDRICK P. SEMAN DAVID O. GLENN BY CONSTANTIN GOOSSEV'United States Patent 3,330,284 FILTRATION MEANS FOR FILTER CIGARETTESFrederick P. Seman, 607 Hardscrabble Road 16505;

David 0. Glenn, 321 W. th St. 16507; and Constantin Goossev, 737 E. 9thSt. 16501, all of Erie, Pa.

Filed May 21, 1964, Ser. No. 369,134 3 Claims. (Cl. 13110.5)

This invention concerns a barrier in a cigarette which may be used withor without a filter tip. This invention relates to an aerodynamic andheat radiant device in a cigarette through which smoke changes itstemperature, speed, humidity, and creates pressure turbulence to removeundesirable substances from the smoke.

According to the invention, there is provided a cigarette with a tipapplied to one end. The tip may be formed as a tubular member secured tothe cigarette. The tubular member is cylindrical in shape and has aporous material therein which serves as an absorber of nicotine, tars,and solid particles from the tobacco smoke passing through our disk. Thefilter tip renders the cigarette cleaner and more comfortable to hold inthe mouth than a cigarette having an ordinary bare tip.

The porous filter material may be made of various vegetable or syntheticmaterials and may be made of such materials as synthetic fibers,fiberglass, rock wool, cellulose, charcoal activated powdered materialsuch as kaolin or the like.

It is, accordingly, an object of the present invention to provide acigarette with a smoke barrier employing the filter as an absorbentmaterial for tar and liquids deposited in the process of passing throughsmall slots.

Another object of the invention is to provide a filtration deviceemploying heat radiant and aerodynamic principles.

Another object of this invention is to provide a barrier which willremove the objectionable tar and foreign matter.

Another object of this invention is to employ a white and shinyreflective material which holds the heat back from the mouth end.

With the above and other objects in view, the present invention consistsof the combination and arrangements of parts hereinafter more fullydescribed, illustrated in the accompanying drawing and more particularlypointed out in the appended claims, it being understood that changes maybe made in the form, size, proportions, and minor details ofconstruction without departing from the spirit or sacrificing any of theadvantages of the invention.

In the drawing:

FIG. 1 is a longitudinal partial cross sectional view of a cigaretteaccording to the invention;

FIG. 2 is a view taken on line 2-2 of FIG. 1;

FIG. 3 is a view taken on line 33 of FIG. 2;

FIG. 4 is a view similar to FIG. 2, of another embodiment of the uniquefilter disk; and

FIG. 5 is a view taken on line 55 of FIG. 4.

Now with more particular reference to the drawing, the cigarette shownhas a paper wrapper 11 of a conventional type with tobacco 12 therein.

3,330,284 Patented July 11, 1967 The filter body indicated at 18 isattached to the paper in the usual manner and has the filter material 13therein which may be of the materials referred to, such as syntheticfibers, fiberglass, rock wool, cellulose, activated charcoal powder, orthe like.

A second disk 14 may be spaced from the first filter 14 with filtermaterial 13" therebetween. The disks themselves may be made of porouscardboard material sandwiched between plastic coatings 20 and 20'. Thecardboard material itself may be absorbent of noxious materials such astars and otherwise. The disks 14 themselves may be between A and X inthickness to accomplih optimum results, although other thicknesses willfunction successfully.

It has been discovered that the V-shaped notches cause the smoke passingtherethrough adjacent the center to have a higher velocity than thatnear the outer periphery; therefore, since the smoke adjacent theirouter periphery travels around a longer path, the net velocity of thesmoke in the center and the outside periphery is approximately equal.

While four slots are shown, the slots could be any number between oneand six. It has been discovered that if slots in excess of ix are used,the effect is minimized.

The disk 14 may be of a suitable white material such as, for example,plasticizer cardboard, plastic or the like, and it has the radiallyextending sharp V-shaped notches 15 cut therein. These sharp notches arecut at an angle as shown in FIG. 3 so that they give smoke a swirling orspiral action and give it a higher velocity adjacent the center than atthe outside due to the V-shaped notches and the fact that they are widerat the outside than adjacent the center. The smoke passes through thesenotches in spiral ribbons with the ribbon thinner adjacent the centerdue to the notch shapes.

In the embodiment of the invention shown in FIGS. 4 and 5, the diskshown can be used with the cigarette shown in FIG. 1. Instead of thespiral V-shaped notches, rectangular shaped notches 114 and 115 are cutin the disk extending radially outwardly. These notches extendapproximately half way from the periphery to the center of the disk.Thus, the smoke that comes through these notches comes through inribbons of uniform thickness and smoke is diffused by the filtermaterial and velocity changed drastically and, therefore, it causes thetar and nicotine to be filtered therefrom.

The filter material adjacent the disk may be impregnated with an aqueoussolution of calcium chloride or some other hygroscopic material whichwill absorb some of the water vapor from the air and thereby remove itfrom the smoke.

The foregoing specification sets forth the invention in its preferredpractical forms but the structure shown is capable of modificationwithin a range of equivalents without departing from the invention whichis to be understood is broadly novel as is commensurate with theappended claims.

The embodiments of the invention in which an exclusive property orprivilege is claimed are defined as follows:

1. In combination, a cigarette and a filter and a disk disposedtherebetween,

a 3 4 said disk being relatively thin and having radially ex- ReferencesCited tending, circurnferentially spaced notches therein, i V UNITEDSTATES PATENTS said notches being adapted to pass smoke from sa d 7 tcigarette to said filter in spaced ribbons with the inr 879,796 2/1908PlaPe 131 210 side of said ribbons spaced from the center of said 52,360,628 10/1944 Wnght 131216 X cigarette, said notches being definedby a pair of 2445476 7/1948 Folkman' confronting Wall portions each ofwhich is inclined 236L219 1/1959 P 131 10 to the central axis of thecigarette and in a longi- 3,079,926 3/1963 Llttchfield et 131 10 tudinaldirection thereof whereby smoke is directed 3,167,076 1/1965 F 1311O'into said filter material a spiral path. 10 3,174,487 3/1965 Mlssler131' 210 '2. The combination recited in claim 1 wherein FOREIGN PATENTSsaid notches terminate midway between the periphery 436,432 10/1935Great Britain;

of said disk and the center thereof. 3. The combination recited in claim1 wherein SAMUEL KOREN, Primary Examiner.

7 said filter is impregnated With a hygroscopic material. 15 JOSEPH S,REICH; Exrtminer.

1. IN COMBINATION, A CIGARETTE AND A FILTER AND A DISK DISPOSEDTHEREBETWEEN, SAID DISK BEING RELATIVELY THIN AND HAVING RADIALLYEXTENDING, CIRCUMFERENTIALLY SPACED NOTCHES THEREIN, SAID NOTCHES BEINGADAPTED TO PASS SMOKE FROM SAID CIGARETTE TO SAID FILTER IN SPACEDRIBBONS WITH THE INSIDE OF SAID RIBBONS SPACED FROM THE CENTER OF SAIDCIGARETTE, SAID NOTCHES BEING DEFINED BY A PAIR OF CONFRONTING WALLPORTIONS EACH OF WHICH IS INCLINED TO THE CENTRAL AXIS OF THE CIGARETTEAND IN A LONGITUDINAL DIRECTION THEREOF WHEREBY SMOKE IS DIRECTED INTOSAID FILTER MATERIAL IN A SPIRAL PATH.